Demand for water from the Sacramento River Basin (SRB) is given by inverse demand curve P = 5000 – 0.001Q where Q is in acre-feet of water. (An acre-foot of water is enough water to cover one acre of land, one foot deep in water ~ 300,000 gallons) The marginal cost of pumping from the SRB is $200/acre-foot up until the maximum amount that can be pumped. (a) Initially, we have several wet years such that as much water can be taken from the Sacramento Rive r as desired. If the government want the welfare-maximizing amount of water to be drawn from the river, what price should it set and how much will be pumped?

answer; i believe that the correct answer is ; (a) customer demand for the

and whats your questoin

ans.

heterothermic organisms include those organisms that can switch between homeothermic (having body temperature higher than environment) and poikilothermic (having variation in internal body temperature) strategies.

some migratory birds show heterothermy as they decrease their metabolic rate during cold nights to keep their body temperature low. drop in metabolic rate allows increase in production efficiency of birds that reduces the internal body temperature to make it equal to external cold temperature during cold nights.

thus, the correct answer is 'birds allow their temperature drop in order to increase their production efficiency.'